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Math Help - How to figure out binominal distribution

  1. #1
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    How to figure out binominal distribution

    Here is the question:
    Link: http://i41.tinypic.com/69opqt.png

    I need help figuring out what is the success rate of this. Thanks for your help.
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  2. #2
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     <br />
P(A\cup B) = P(A)+P(B) = \frac{1}{4} + \frac{1}{8} = \frac{2}{8} + \frac{1}{8} = \frac{3}{8}<br />

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  3. #3
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    Thank you for help pickslides.

    However, I am now stuck on figuring out part a)
    It tells you it is spun once.
    So is the answer 1C1 x (.375)^1
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  4. #4
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    My answer is correct for 1 trial.

    Using the binomial theorem

     <br />
P(A \cup B) = \binom{1}{1}\left(\frac{3}{8}\right)^1\left(\frac{  5}{8}\right)^0 = \frac{3}{8}<br />
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  5. #5
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    Excellent explanation. Thanks!
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